The acai (pronounced ah-sigh-ee) berry is a small, dark purple palm fruit, indigenous to the Amazon rainforest. For hundreds of years, these berries have formed a staple part of the diet of native tribes. As a richly coloured fruit, acai berries naturally contain the purple pigments known as anthocyanins.

Resveratrol

Resveratrol is a polyphenol compound found in the skin of grapes, blueberries, raspberries, mulberries and senna.

Grape seed extract

As the name suggests, grape seed extract is a derivative of grape seeds.

Pomegranate

The pomegranate (botanical name Punica granatum), is a fruit-bearing deciduous shrub or small tree in the family Lythraceae that grows between 5 and 8 m (16 and 26 ft) tall. The fruit contains hundreds of edible seeds called arils.

The pomegranate originated in the region of modern-day Iran and has been cultivated since ancient times throughout the Mediterranean region and northern India. Today, it is widely cultivated throughout the Middle East and Caucasus region, north Africa and tropical Africa, the Indian subcontinent, Central Asia, the drier parts of southeast Asia and parts of the Mediterranean Basin. It is also cultivated in parts of California and Arizona.